Hope someone can help me with this. I am getting codes P0016 and P0344 come up. This is happening most of the time, but at others the engine light goes out and the car runs fine. When the engine light comes back on, the RPM limits at 2000 and after I shut the engine off for a couple minutes, the light stays on but the RPM limit seems to go away with a noticeable lack of power. Others the engine runs fine. I have replaced the cam sensor in the past 7 months, and the engine only has 99K on it. Can it be the timing belt? I hope not, but ANY help would be GREATLY appreciated.

Cheers all, Dan.